body,h1,h2,h3,h4,h5,h6,form,button,input,dd,dl,dt,ol,ul,li,p,hr,pre,td,th{
    margin: 0;
    padding: 0;
}
body{
    font: 12px/1.5 tahoma,arial,宋体;
}
.sea {
    display: flex;
    padding-top: 5px;
}

.logo{
    height: 20px;
    width: 320px;
}

.head-logo{
    margin-right: 50px;
}
.info{
    height: 30px;
    width: 450px;
}
.info ul{
    display: flex;
    line-height: 20px;
    list-style: none;
}
.info ul li{
    padding-top: 5px;
    padding-left: 10px;
}
.info ul li a{
    color: black;
    text-decoration:none;
}
.info ul li a:hover{
    color: red;
}

.info ul li button:hover{
    cursor: pointer;
}